I totally agree with alfyG
I also doubt it that you can get into NYU with a 540 unless you have superior GPA, work experience, rec. letters, and come from a minority group.
Obviously your MATH is pretty decent and I'm sure you can get it to the 45 - 47 range, easily. your verbal is very low [19]. This is GOOD news to you because that means there is a huge place for improvements in a short period of time. If you spend a full month with specific studying schedule, I'm confident you can get your score into the 620 - 680 range. Who knows, you may even break the 700 barrier !
By the way, you only took the GMAT twice in two years .. huh .. and you already gave up ? read some of the sticky's in the forum .